Zur Einwanderung potamophiler Malacostraca in die obere Donau: Limnomysis benedeni (Mysidacea), Corophium curvispinum (Amphipoda) und Atyaephyra desmaresti (Decapoda)

Secondary title: On the immigration of potamophilous Malacostraca into the Upper Danube River: Limnomysis benedeni (Mysidacea), Corophium curvispinum (Amphipoda), and Atyaephyra desmaresti (Decapoda) Abstract: Since 1982/83 Limnomysis benedeni migrated along the River Danube from Vienna in several steps to Passau. Populations of Corophium curvispinum which migrated upstreams in the rivers Main and Danube came into contact by the Main-Danube-Channel. In its upstream migration in the Rhine-Main system, Atyaephyra desmaresti extended its distribution in the Main-Danube-Channel and approached closely to the highest point at 406 m above sea level. Collections inside ships and on the exterior wall of a ship point to an important role of dispersion by navigation.